Belting



G. H. BLAKESLEY.

(No Model BELTING.

No. 350,106. Patented Oct. 5, 1886.

N, PETERS Phawhmn n her. wuhm mn. D. c.

UNITED STATES PATENT OFFICE.

GILBERT ll. BLAlx'llSLEY, OF BRISTOL, CONNECTlCU'l.

BELTIN'G.

fiPECIFICA'IION forming part of Letters Patent No. 350,106, dated October 5, 188i".

Application filed December 16, 1885.

T 0 aZZ whom, it may concern;-

Beit k nown that 1', G [L'BERT H. BLAKESLEY, residing at Bristol, in the county of Hartford and State of Connecticut, have invented certain new and useful Improvements in Belting; and I do declare the following to be a full, clear, and exact deseripti on of the same, reference being had to the accompanying drawings, which form a part of this specification.

My invention relates to an improvement in belting; and it consists in an article composed of a spiral spring, a braided covering applied thereto,and means for attaching the ends of the spring together or to other beltin My invention further consists in belting havi ng certain details of construction, as will he hereinafter described, and pointed out in the claims.

In the accompanying drawings, Figure l is a plan view of a belt embodying my invent-ion, with a. portion of the braided covering broken away to show the tortuous spiral spring. Fi 2 is a View of the belt in transverse section, and Fig. 3 is a view of one end of the belt in longitudinal central section.

The spring A of the belting is made of wire, of aweight and thickness corresponding to the nature of the work to be done by the belting.

Preferably the spring will be made in tortuous forn1,as herein shown. The covering B of the belting is formed by braiding strong yarn tightly over the spring when the same is stretched or under a tension representing the limit of its extension in the finished belting and within the capacity of the spring for complete recovery, whereby the braiding, without interfering with the extension of the spring within practical limits, preventsit from being extended beyond its capacity for recovery. Being puton taut, the braiding is prevented from slipping upon the spring by the tortuous form of the same. Cords C 0, each having a knot, D, are secured to the respective ends of the spring by the inclosnre of their knots within the ends thereof. Braided ends E E, being continnations of the braided covering B, cover the said cords which form the means for attaching the ends of the spring together or to other belting. If desired, the ends E E may be gummed or otherwise treated to prevent them from frayin Belting made as described automatically ad- Scrial No. 195,853. (No model.)

l belting.

. gle cylinder.

jnsls itself in tension to use just the amount of power required to operate the thing driven,and no more, and therefore imposes the minimum of strain upon the running parts,which receive light wear, and reduce to the minimum the amount ofpower required to drive the machine. The braided covering,besides acting as asafeguard against the extension of the spring beyond its capacity for recovery, protects the spring and greatly enhances the traction of the The flexible covered extensions of the belting, being directly connected through the knotted cords with the spring, throw the strain upon the same and relieve the braided covering and form convenient and effective means for attaching the ends of the spring together or to other belting.

In all "tuatitms of its use the be] ting secures economy of power and saves wear upon all running parts. In some situations its advantages, in addition ,to those specified, reach to the product of the machine, and notably in jacks for spinning yarn,where the belts for an entire section of spindles are driven from asin- The belts ordinarily employed for driving the spindles are not self-adjusting in tension, and, it being impracticable to put them on in the same tension, it follows that there is a wide difference in the tension of the several belts of.a single section of spindles. llloreoier, it is necessary in preventing the belts ordinarily employed from slipping to put'them on very tight or in high tension, and the difference in tension in the several belts being multiplied upon the cylinder the same is not infrequently broken; but under all circumstances the tension of the belts imposes great and unequal strain upon the cylinder and spindles, wearing their bearings and entailing an unnecessary expenditure of power over that required to operate the jack were it not for the excessive friction to be overcome. Furthermore, the variation in the tension of the belts results in an unequal performance of the several spindles, and consequently in irregularities in twisting the yarn,as will be manifest not only in it, but also in the fabric made from it. Again,the belt ordinarily employed often gets so slack as not to rotate the spindles, and thus interferes with the work and demands constant attention. All these things of course add to the expense of-produeing yarn.-

ICO

The objections above recited are 'obviated bythe employment of my improved belting, which automatically adjusts itself to use just, the amount of. power required to drive the spindle, and no more, and as the several spindlesrequirethe same amount of power, it follows that the several spindles will adj ust themselves to practically the same tension,whereby they will be operated with practical uniformity, and each twist the yarn alike, as will be apparent in the yarn itself and in the fabric made from it. The several belts of a section of spindles, being'of practically the same, tension, distributethe strain evenly on the cylinder, and hence to the best advantage as to the wear of its bearings and as to driving it. Then the self-adj ustment of the belts to use the power required to drive the spindles, and no more,

not only reduces to the minimum the strain, andconsequently the wear, upon running parts, but also reduces to the minimum the power required for driving thcjack. Furthermore.

the belts do not get loose, and require little it any attention. 1 It is not necessary that the entire belt should be composed of my improved belting-sections, which may be employedwith belting of other makes. Having fully described my invention, what I claim as new, and desire to secure by Letters Patent, is c v 1. Belting composed of' a spiral spring, a braided covering applied thereto, so asto limit its extension within its capacity for re covery, and independent flexible extensions stantially as set forth.

limit its extension within its capacity for recovery, and extended beyond the ends of the spring, substantially as set forth.

limit its extension within its capacity for respring, and flexible extensions connected with the ends of the spring and covered by the v(letially as set forth.

specification in the presence of two snbscribing witnesses. I i

y GILBERT H. BLAKESLEYL Vitnesses:

ERNEsr L. Mannnlv, GEO. D. SEYMOUR.

scribed extensions of -thecovering, snbstam U 50 In testimony whereof I have sig-nedthis connected with the ends of the spring, sub- 2. Belting composed ofa spiral spring and v x a'braided covering applied thereto, seats to H 3. Belting composed of a spiral spring and a braided covering applied thereto, so as to 45 I covery, and extended beyond the ends of the 

